Zmodernizowana podstawowa osnowa grawimetryczna kraju (POGK 97)

• Autorzy: Sas-Uhrynowski A. , Cisak M. , Sas A. , Siporski L.

Warianty tytułu

EN

Modernised basic gravimetic network of Poland (POGK 97)

• Języki publikacji: PL

Abstrakty

PL

Przedstawiono opis osnowy oraz szczegóły dotyczące prac pomiarowych na punktach osnowy, które były wykonane w latach 1994-1997.

EN

Basic gravimetric network of Poland was established in sixties, so now it does not fulfil the modern needs of geodesy, especially considering more common recent use of satellite measuring techniques. In 1977 the general project of modernisation of the network was prepared in the Institute of Geodesy and Cartography and approved by the Head Office of Geodesy and Cartography. All new points of the modernised gravimetric network were stabilised by concrete poles between 1978 and 1987, but the measurements were possible only in 1992, when the newest La Coste & Romberg gravimeters were purchased by the Institute of Geodesy and Cartography. Project of gravimetric network, verified by experts from the Geodesy Committee, Polish Academy of Sciences, was approved again by the Department of Surveyor General of Poland in 1993. New gravimetric network comprises fundamental point, located in the Observatory of the Institute of Geodesy and Cartography in Borowa Gora, which was already used several times to measure absolute acceleration of gravity, 16 absolute points (9 of which were already measured), 351 stabilised terrain points and two meridian’s calibration base lines, based on 6 absolute points. The Institute of Geodesy and Cartography started to measure the new network in 1994 and the measuring works were completed finally in 1997. Values of differences in acceleration of gravity Ag were calculated using scales of gravimeters determined on the basis of national gravimetric network, and next were re-calculated in 1997 to the system defined by absolute points. The whole network consists of 674 spans, where 722 measurements of differences in acceleration of gravity [delta]g were performed. It must be emphasised, that 62% of errors of Ag values measured on network spans does not exceed 0.010 mGal, while criterion of correctness is 0.020 mGal.

• Wydawca: Instytut Geodezji i Kartografii
• Czasopismo: Prace Instytutu Geodezji i Kartografii
• Rocznik: 1999
• Tom: T. 46, z. 98
• Strony: 41--47
• Opis fizyczny: Bibliogr. 3 poz., rys., wykr.

Twórcy

autor

Sas-Uhrynowski A.

autor

Cisak M.

autor

Sas A.

autor

Siporski L.

Bibliografia

• 1. Cisak M. [1998]: Modelowanie dryftu grawimetrow LaCoste&Romberg typ G przy pomiarach podstawowej osnowy grawimetrycznej w Polsce. Prace IGiK t. XLV, z. 96.
• 2. Wytyczne Techniczne G-1.2. GUGiK [1984]: Białystok: OPGK – Zakład Kartografii i Reprodukcji
• 3. Torge W. [1989]: Gravimetry. Walter de Guyter, Berlin, New York.